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non-coalescing pseudopodia have the essential characters of 
an “ Amceban’”’ rhizopod, whilst the contractile vacuoles, if 
not exactly alike, much resembles them, but still more those 
of an “Actinophryan.” The pale shiny, mostly elliptic, 
granules are again found in Amceba and related Rhizopoda, 
and are probably equivalent to the “ sarcoblasts” (Wallich) 
of Ameeba; whilst the chlorophyll-granules of the present are 
again seen in some Difflugians as well as various other 
Rhizopoda, temporarily in some, or possibly constantly in 
others. The special and very remarkable and very puzzling 
character of the investing mantle or coat would place such a 
form as ours out of all the older “‘ Amceban ”’ genera. ‘This coat 
is at once yielding and plastic, elastic and tough, seemingly 
capable of being bored through and effacing the aperture— 
possibly, however, minutely perforate—and clothed with 
processes of variable length, these separable under certain 
reagents as if in a measure articulated, resisting some reagents, 
at once disappearing under the action of others. This is, 
therefore, not a test comparable to that of Difflugia, or 
Euglypha, or Plagiophrys, &c. What, too, may be assumed 
to be the nature or homology of the outer hyaline investment 
depicted in Fig. 3, and described above? Does its existence 
at all point to the presence of actual canals in the coat 
indicated by the vertical or radial strie, and is this -an 
emanation poured out through such canals, comparable to the 
ectosare of an Ameeba, or is it rather to be regarded as 
*‘ chitonosare ” (Wallich)!? If, indeed, the mantle or coat 
described be not, as I have throughout regarded it, a truly 
external investment, but a wall placed between the inner 
body-inass and an always existent, though, on account of its 
very pellucid and subtie nature, seldom visible outer region 
of the total rhizopod, then the existence of little actual canals 
need not be necessarily assumed; and, perhaps, such an 
assumption may not, after all, be quite unfounded, for though 
this halo is rarely evident, yet a kind of bright outline often 
presents itself immediately external to the striate, often 
hairy, coat, which, however, I have rather been inclined to 
ascribe to an optical effect than to the visible expression of the 
existence of an actual outer investing sarcodic stratum, how- 
ever delicate, or of however slight depth. Might the fine 
vertical lines seen in the substance of this subtle covering 
actually indicate the very moment of formation or deposition 
of the hair-like processes? The weak action of the sulphuric 
1 Wallich, “On the Polycystina,” in ‘Quart. Journ. Micr. Science,’ 
Voll V, N.8, 0-7. 
